How to make a sprite move left and right ?

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Waltzer

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Posted: 22nd Sep 2006 21:59

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Hello, I'm trying to make a 2D platform game (I just know the very basics of DBP).

And I was wondering, how can i make the sprite/character to move right when I press the right arrow, and how to make it move left when pressing the left key.

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Scraggle

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Posted: 23rd Sep 2006 18:38

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+ Code Snippet

`make a sprite
create bitmap 1,64,64
box 0,0,64,64,rgb(255,0,0),rgb(0,255,0),rgb(0,0,255),rgb(255,255,0)
get image 1,0,0,64,64,1
delete bitmap 1
`sprite made

x# = 100
y# = 100
speed# = 2.5

sync on
sync rate 60

do
	
	if leftkey() 	then dec x# , speed#
	if rightkey() 	then inc x# , speed#
	
	sprite 1, x#, y#, 1
	sync
	
loop

That should do it

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Zeus

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Posted: 23rd Sep 2006 19:03

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Here:
x=250
y=250
sync on
do
x=x-5
x=x+5
sync
loop

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Scraggle

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Posted: 23rd Sep 2006 20:01

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@JSG That code does absolutely nothing! It most certainly doesn't help answer the question. Having seen some of you other posts and considering you have just got back from a 2 week ban, I would suggest thinking long and hard before posting anything at all ... especially something as pointless as this!

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Waltzer

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Posted: 23rd Sep 2006 22:09

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Thank you Scraggle, it works (I'm so happy).

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Waltzer

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Posted: 23rd Sep 2006 22:51

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How do I make the sprite changing image while clicking leftkey and rightkey ?

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sadsack

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Posted: 24th Sep 2006 04:39 Edited at: 24th Sep 2006 05:17

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try this

+ Code Snippet

`make a sprite
create bitmap 1,64,64
box 0,0,64,64,rgb(255,0,0),rgb(0,255,0),rgb(0,0,255),rgb(255,255,0)
get image 1,0,0,64,64,1
delete bitmap 1


create bitmap 2,64,64
box 0,0,64,64,rgb(255,255,255),rgb(255,255,255),rgb(0,0,0),rgb(255,255,255)
get image 2,0,0,64,64,1
delete bitmap 2


`sprite made

x# = 100
y# = 100
speed# = 2.5
sprite 1, x#, y#, 1
    sprite 2, x#, y#,1
sync on
sync rate 60
hide sprite 2
do

if rightkey()
      inc x# , speed#
        hide sprite 1
         show sprite 2
   else
        hide sprite 2
        show sprite 1
   endif

if leftkey()
      dec x# , speed#
        hide sprite 1
         show sprite 2

   endif

sprite 1, x#, y#, 1
sprite 2, x#, y#, 2


   sync

loop

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Scraggle

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Posted: 24th Sep 2006 15:42 Edited at: 24th Sep 2006 16:51

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I don't think that is what he had in made.
I presume what you are asking for is to make the sprite animate while the keys are pressed.
This will do the job for you:

+ Code Snippet

`make 2 sprites
create bitmap 1,64,64
box 0,0,64,64,rgb(255,0,0),rgb(0,255,0),rgb(0,0,255),rgb(255,255,0)
get image 1,0,0,64,64,1

box 0,0,64,64,rgb(255,0,0),rgb(255,0,0),rgb(0,0,255),rgb(0,0,255)
get image 2,0,0,64,64,1
delete bitmap 1
`sprite made

x# = 100
y# = 100
speed# = 2.5
frame = 1
AnimSpeed = 200

sync on
sync rate 60

do
	if LeftKey()
		if LeftPressed
			if Timer() > LeftPressed + AnimSpeed
				LeftPressed = Timer()
				inc frame
			endif
		else
			LeftPressed = Timer()		
			inc frame
		endif
		dec x# , speed#
	endif

	if RightKey()
		if RightPressed
			if Timer() > RightPressed + AnimSpeed
				RightPressed = Timer()
				inc frame
			endif
		else
			RightPressed = Timer()		
			inc frame
		endif
		inc x# , speed#
	endif
		
	if frame > 2 then frame = 1
	
	sprite 1, x#, y#, frame
	sync
	
loop

Change the variable AnimSpeed to adjust the rate of animation speed. It controls the speed in milliseconds, so a delay of 1000 will change the animation frame every second. A delay of zero will change the frame every loop.

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Scraggle

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Posted: 24th Sep 2006 16:50

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...and here is some code to show an 8 frame sprite properly animated.
You will need to download the image I have used, so click the download button and save the image in the same folder as your project.

Here is the updated code:

+ Code Snippet

set bitmap format 21
load bitmap "Soldier.png", 1
Image = 1
for y = 0 to 3
	for x = 0 to 3
		get image Image, (x * 96), (y * 96), (x * 96) + 96, (y * 96) + 96, 2
		inc Image
	next x
next y
delete bitmap 1


x# = 100
y# = 100
speed# = 2.5
frame = 1
AnimSpeed = 100

sync on
sync rate 60

do
	OldDirection = Direction
	if LeftKey()
		if LeftPressed
			if Timer() > LeftPressed + AnimSpeed
				LeftPressed = Timer()
				inc frame
			endif
		else
			LeftPressed = Timer()		
			inc frame
		endif
		dec x# , speed#
		Direction = 8
	endif

	if RightKey()
		if RightPressed
			if Timer() > RightPressed + AnimSpeed
				RightPressed = Timer()
				inc frame
			endif
		else
			RightPressed = Timer()		
			inc frame
		endif
		inc x# , speed#
		Direction = 0
	endif
	
	if frame > 8 then frame = 1
	
	sprite 1, x#, y#, frame + Direction
	sync
	
loop

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Zeus

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Posted: 24th Sep 2006 19:04

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@scraggle: Trying to blame for me for trying to help? I does if you have a sprite with it. I have tried thank you.

I am sorry for spamming and posting ridiculous posts, I will not do it again.

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Gamedesign er20

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Posted: 24th Sep 2006 20:43

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@Scraggle
does your code work with DBC?

Cocacola and Pepsi aren't that differnt. Deal with it.

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Scraggle

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Posted: 24th Sep 2006 21:13

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@JSG You are not trying to help if your code is useless ... it confuses people becuase they think someone offering help must know what they are doing. Which you clearly don't!

Quote: "does your code work with DBC?"

I don't know, I don't have it. Try it and see but I am pretty sure you will have to delete the first line.

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sadsack

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Posted: 24th Sep 2006 22:09 Edited at: 24th Sep 2006 22:18

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I knew that is what he wanted the other sprited would be animate.
My way he would have to do a little thinking. He want to know how to put another sprit on screen when he press the move key. That is what the code he got.
renny

Edit: Your code is very nice.
edit2 I just seen your art work on the soldier. That is real nice,
I wish I could do that good.

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Scraggle

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Posted: 24th Sep 2006 23:03

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So do I ... I got that from Reiners tilesets

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sadsack

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Posted: 25th Sep 2006 03:17

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I will go there and see what they have,thanks Scraggle
renny

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Sunflash

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Posted: 30th Sep 2006 02:51

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Yeah, I'm making a platform game with graphics from www.reinerstileset.de too. It's going really well, the only place I'm stuck is at how to make the game run in a web browser, so I'm waiting for the DB Web Embedder thing that is being made... I plan to post the source code and media in the W.I.P. thread soon. But right now I'm just to lazy...

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2D All the way! / How to make a sprite move left and right ?